How America's Political Parties Change (and How They Don't)

The election of 2016 prompted journalists and political scientists to write obituaries for the Republican Party—or prophecies of a new dominance. But it was all rather familiar. Whenever one of our two great parties has a setback, we’ve heard: “This is the end of the Democratic Party,” or, “The Republican Party is going out of existence.” Yet both survive, and thrive.

We have the oldest and third o...